Description

Introducing the Terminator X Stealth 4150 1250HP EFI system by Holley, featuring 8, 100LB/HR Fuel Injectors designed to support up to 650 HP naturally aspirated or an impressive 1250 HP in forced induction applications. The Terminator X ECU offers self-learning fuel map capability and ignition timing control, enhancing overall engine performance, including idle stability, drivability, and wide-open throttle horsepower. Notably, this system includes provisions for transmission kickdown in GM TH350/400, 200R4/700R4, and Ford C4/C6 applications.

Key Features:

Direct bolt-on 4150 Flange Carburetor Replacement
Includes 8, 100LB/HR Fuel Injectors for up to 650 HP naturally aspirated or 1250 HP forced induction
Transmission control for Pre-2009 GM 4L60E/4L80E Transmissions in Terminator X Max Stealth 4150 kits (Part numbers 550-1014, 550-1015, 550-1016)
Internal 1bar MAP sensor integrated into the Terminator X ECU
Stealthy wiring exits below the rear fuel injector cover for a clean installation
Timed spark port for vacuum advanced distributors located under the front fuel bowl for easy access
Machined air entry fits most stock-style air cleaners with locator provisions
Requires an external fuel pressure regulator set to a base pressure of 58.5 PSI (e.g., Holley part # 12-886)
Integrated ignition timing control enhances idle stability, fuel economy, and wide-open throttle performance
High-resolution full-color touchscreen for initial setup, tuning, and gauge displays
Simple Calibration Wizard for easy tuning without a laptop
Genuine Bosch LSU 4.9 Wideband Oxygen Sensor included for real-time Fuel Map Learn
OEM Style TPS/IAC ensures years of dependable service
Available in three finishes: Shiny, Black, and Gold